Table 7. Distribution of applied theoretical perspectives.

Theory	Author	Total Citations
Theory of Planned Behaviour	Ahamat et al. (2018)	15
	Al Mamun et al. (2020)
	Amoako et al. (2020)
	Caniëls et al. (2021)
	Choi and Johnson (2019)
	Joshi and Rahman (2019)
	Kumar et al. (2017)
	Müller et al. (2021)
	Nimri et al. (2020)
	Onel (2017)
	Sharma et al. (2020)
	Siyavooshi et al. (2019)
	Wang et al. (2020)
	Yang et al. (2019)
	Zahan et al. (2020)
	Zhang et al. (2019)
Theory Reason Action	Joshi and Rahman (2019)	7
	Joshi and Rahman (2017)
	Sharma et al. (2020)
	Zhang et al. (2019)
	Sari et al. (2020)
	Trivedi et al. (2018)
	Troudi and Bouyoucef (2020)
Value Belief Norm	Di Martino et al. (2019)	3
	Trivedi et al. (2018)
	Varela-Candamio et al. (2018)
Attitude-Behaviour-Context (ABC) Theory	Liao et al. (2020)	2
	Zhang et al. (2018)
Attitude Development Theory	Park and Sohn (2018)	1
Attitude-Intention-Behaviour	Jaiswal and Kant (2018)	1
Costly Signaling Theory	Ali et al. (2019)	1
Goal-Framing Theory	Yang et al. (2019)	1
Grounded Theory	He et al. (2021)	1
Means-End Theory	Eberhart and Naderer (2017)	1
No theory	Leal et al. (2020)	1
Social Adaptation Theory	Van Tonder et al. (2020)	1
Social Capital Theory	De Bernardi et al. (2019)	1
Social Cognitive Theory	Uddin and Khan (2018)	1
S-O-R Theory	Kumar et al. (2019)	1
Stakeholder Theory	Witek and Kuźniar, 2021	1
Acquisition Transaction Utility Theory (ATUT)	Mohd Suki and Mohd Suki (2019)	1
Theory of Consumption Value	Wang et al. (2019)	1
Theory of Normative Conduct	Ahn et al. (2020)	1
Theory of Reasoned Behaviour	Sheng et al. (2019)	1
Three Moral Theories (Utilitarianism, Deontology, Virtue Ethics)	Al-Adamat et al. (2020)	1
WOM Theory	Ahmad and Zhang (2020)	1